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==GRAPHIC CONTENT== An injured man receives treatment at a hospital in Sanaa after he was injured when two suicide bombers hit a Shiite mosque in the Yemeni capital in quick succession on September 2, 2015 in an attack reminiscent of previous bombings by the Islamic State group, sources told AFP. The Islamic State (IS) group claimed the twin bombing in a statement posted on Twitter. AFP PHOTO / MOHAMMED HUWAIS (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)

==GRAPHIC CONTENT==
An injured man receives treatment at a hospital in Sanaa after he was injured when two suicide bombers hit a Shiite mosque in the Yemeni capital in quick succession on September 2, 2015 in an attack reminiscent of previous bombings by the Islamic State group, sources told AFP. The Islamic State (IS) group claimed the twin bombing in a statement posted on Twitter. AFP PHOTO / MOHAMMED HUWAIS        (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)